Import Arc history in Firefox

arcHistoryToFirefox.md

No good reason why this had to be so tricky:

• Install Export Chrome History extension in Arc
• Export history to JSON. Choosing the forever option does actually export ALL the history in Arc
• Install History Export for firefox
• Optional: Export Firefox history, to see what the json looks like
• Make the Arc history match what firefox expects. I used this javascript to convert it:

arcHistory.map(item => {
    return {
        id: item.id,
        url: item.url,
        title: item.title,
        lastVisitTime: Math.floor(item.lastVisitTime),
        visitCount: item.visitCount,
    }
})

• Not much conversion required, but still, I didn't want firefox to crash because there was extra data, or floating point timestamps
• Import the resulting json file using History Export

It wouldn't work for me without converting the JSON. Here is a complete script for converting the history.json.

const fs = require('fs')

const history = fs.readFileSync('history.json')
const arcHistory = JSON.parse(history)
const data = arcHistory.map(item => {
    return {
        id: item.id,
        url: item.url,
        title: item.title,
        lastVisitTime: Math.floor(item.lastVisitTime),
        visitCount: item.visitCount,
    }
})

fs.writeFileSync('ff-history.json', JSON.stringify(data))

Thanks!

It wouldn't work for me without converting the JSON. Here is a complete script for converting the history.json.

const fs = require('fs')

const history = fs.readFileSync('history.json')
const arcHistory = JSON.parse(history)
const data = arcHistory.map(item => {
    return {
        id: item.id,
        url: item.url,
        title: item.title,
        lastVisitTime: Math.floor(item.lastVisitTime),
        visitCount: item.visitCount,
    }
})

fs.writeFileSync('ff-history.json', JSON.stringify(data))

Confirmed working. Thank you.

Thanks for this. I just did a regex search and replace to get rid of the decimal points in the visitTime and lastVisitTime values of the original file, which also worked.

It wouldn't work for me without converting the JSON. Here is a complete script for converting the history.json.

const fs = require('fs')

const history = fs.readFileSync('history.json')
const arcHistory = JSON.parse(history)
const data = arcHistory.map(item => {
    return {
        id: item.id,
        url: item.url,
        title: item.title,
        lastVisitTime: Math.floor(item.lastVisitTime),
        visitCount: item.visitCount,
    }
})

fs.writeFileSync('ff-history.json', JSON.stringify(data))

Works on Firefox 139.0 (aarch64)!